696 THE POPULAR SCIENCE MONTHLY. 



country nor science lost anything by the delay ; for the volume was 

 not a mere summary of the earlier reports of the survey, but a new 

 book containing all the earliest facts concerning the geology of the 

 country. The work is too well known to require any comment here, 

 but it may be stated that, although published nearly twenty years ago, 

 it remains to-day the most valuable book of reference on the geology 

 and mineralogy of the Provinces of Ontario and Quebec." In 1864 

 Sir William went to England to attend to the final work on the large 

 geological map of Canada and the neighboring States, which was to 

 accompany his " Geology." He attended the meeting of the British 

 Association in September, and read papers on the fossils of the Lauren- 

 tian rocks Eozoon Canadense which he and Drs. Hunt and Dawson 

 had been mainly instrumental in bringing to notice. The significance 

 of this discovery may be indicated by a sentence from the presidential 

 address of Sir Charles Lyell for that year : " We have every reason to 

 suppose that the rocks in which these animal remains are included are 

 of as old a date as any of the formations named azoic in Europe, if not 

 older, so that they preceded in date rocks once supposed to have been 

 formed before any organic beings had been created." 



At the Paris Exhibition of 1867, the geology of Canada was well 

 represented under charge of Dr. Hunt. Sir William was promoted 

 by the Emperor of France to an officer of the Legion of Honor, and 

 a few months later the Council of the Royal Society awarded him 

 one of the two Royal Gold Medals of the year for his " geological 

 researches in Canada, and the construction of a geological map of that 

 colony." 



In 1869 Sir William, finding that his private work demanded all 

 his somewhat declining energies he was then seventy-one years old 

 resigned his position as director of the Canadian survey. He con- 

 tinued geological work, however, in Canada and adjoining parts of 

 New England for several seasons, his last investigations being made in 

 the Eastern Townships in the summer of 1874. In August he sailed 

 for England, intending to return in the spring, but during the winter, 

 while he was staying in Wales with a sister, the disease which had 

 been gradually coming upon him grew rapidly more serious ; he rallied 

 somewhat in the spring, but never got really strong again, and died 

 June 22, 1875. 



" Those who had the good fortune to know Sir William Logan " 

 (we quote from Professor Harrington's biography) "will remember 

 him not merely as an enthusiastic geologist, but as a frank, true, and 

 genial friend. Many a fellow-creature was cheered by his cheerfulness, 

 helped by his kindly advice and sympathy, or in the more substantial 

 way which ample private means rendered possible. In many respects 

 his was a solitary life. Unlike his great contemporaries, Murchison 

 and Lyell, he never enjoyed the sympathy and assistance of a wife. 

 His over-active mind, no doubt, needed to be drawn from the geologi- 



